If it's your birthday, there's tons of stuff. We've gone a few times on my DH & DS's birthdays.
-DH got a free dessert at the noodle place in MK
-DH got a free pretzel in HS while buying a beer
-All 3 of us were offered something for free at a fruit stand in MK. I got a banana and DH got an orange. The CM told us to come back later if DS changed his mind and wanted something.
-The bakery in the Land gave each of them a chocolate chip cookie.
DH & DS wore their birthday pin for the whole trip, but whenever they offered something for free, if it wasn't actually their birthday, we mentionned it was a couple days earlier, the CM's always still insisted they take the free thing. It sounded almost like they hada quota of free stuff to give away. Works for me!
We also got free desert in Mexico. We were on the DP and asked if we could sub dessert for a salad, they said we could, then the server said she wanted us to try the dessert anyways. We didn't really like, but it was still really nice of her. She got a big tip!